(Click on the column title to sort by that column)
| # | Catholics | Population | Percent Catholic | Diocese | Year | Source |
|---|---|---|---|---|---|---|
| 1 | 618,717 | 1,826,226 | 33.88% | Cotonou (Archdiocese) | 2004 | ap2005 |
| 2 | 370,010 | 1,178,185 | 31.41% | Porto Novo | 2004 | ap2005 |
| 3 | 200,118 | 450,115 | 44.46% | Dassa-Zoumé | 2004 | ap2005 |
| 4 | 140,000 | 884,623 | 15.83% | Lokossa | 2004 | ap2005 |
| 5 | 110,661 | 553,417 | 20.00% | Natitingou | 2004 | ap2005 |
| 6 | 88,364 | 599,954 | 14.73% | Abomey | 2004 | ap2005 |
| 7 | 68,477 | 334,288 | 20.48% | Parakou (Archdiocese) | 2004 | ap2005 |
| 8 | 22,471 | 483,266 | 4.65% | N'Dali | 2004 | ap2005 |
| 9 | 17,221 | 338,650 | 5.09% | Djougou | 2004 | ap2005 |
| 10 | 13,010 | 510,738 | 2.55% | Kandi | 2004 | ap2005 |
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